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Process for preparing thickeners and use of thickeners thus prepared in formulations containing highly viscous unsaturated polyester
Process for preparing thickeners and use of thickeners thus prepared in formulations containing highly viscous unsaturated polyester
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机译：制备增稠剂和使用增稠剂的方法在含有高粘性不饱和聚酯的制剂中制备的增稠剂
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摘要
The present invention relates to a combined clay slurry ( c) is formed, the combined clay slurry (c) is treated with at least one quaternary alkyl-ammonium salt, and the quaternary alkyl-ammonium salt treated mineral clay mixture thus prepared is separated from the aqueous medium; , wherein the aqueous hormite clay slurry (a) is formed by (i.1) dispersing in an aqueous medium a fraction of at least one hormite clay selected from the group of sepiolite and palygorskite to form a dispersion, The smectite clay slurry (b) is formed by (ii.1) dispersing at least one fraction of smectite clay in an aqueous medium to form a dispersion, wherein the weight of the hormite clay content in the combined clay slurry (c) is the smectite clay content exceeds the weight of; subjecting the dispersion formed in (i.1) and (ii.1) to high velocity fluid shear before performing step iii. and/or after performing step iii; wherein the at least one hormite clay utilized to form the aqueous hormite clay slurry (a) exhibits a methylene blue exchange capacity of less than 20 mmol methylene blue per 100 g of the at least one hormite clay in a dry state, and The capacity is 100 mesh US As determined on the portion of the aqueous hormite clay slurry passed through a standard screen, 100 mesh U.S. The hormite clay slurry prior to passing through a standard screen is such that at least 90% by weight of the hormite clay contained in the aqueous hormite clay slurry is 100 mesh U.S. at least one unsaturated polyester of at least one mixed mineral organoclay rheology additive comprising or consisting of a quaternary alkyl-ammonium salt treated mineral clay mixture having a particle size distribution allowing it to pass through a standard screen It relates to use in a liquid composition comprising The present invention also relates to a process for preparing a mixed mineral organoclay rheology additive and to the use of the additive so prepared as a thickener in liquid compositions.
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